sheldon



E. P. SHELDON.

MABGIN BEARER.

APPLICATION FILED JAN. 11.1911.

1,325,760. Patented Dec. 23, 1919.

HIM,

EDWARD P. SHELDON, OF NEW YORK, N. Y., ASSIGNOR T0 It. I-IOE AND 00., OF NEW YORK, N. E21, A. CORPORATION OF NEW YORK.

MARGIN-BEAREB.

I neeavco.

Specification of Letters Patent.

reame Dec. 23, 1919.

Application filed January 17, 1917. fierial No. 142398.

To all whom it may concern:

Be it known that I, EDWARD P; Sit-minnow, a citizen of the United States, residing at New York, county of Kings, and State of New York, have invented certain new and useful Improvements in Margin Bearers, fully described and represented in the following specification and the accompanying drawings, forming a part of the same.

This invention relates to improvements in margin bearers or bearing bands.

In printing machines it is desirable that the surfaces, such as cylinders, pipe rolls, turning rolls, guides, etc., over which the freshly printed sheet or web passes in its course through the machine, should be provided with devices whereby the sheet or web is handled only on its margins or other unprinted portion, so as to prevent offset or smutting, and thus enable a line quality of printing to be performed. The devices usually employed for thispurpose are narrow thin bands of suitable material known as margin bearers or bearing bands which are placed on the cylinders or other surfaces over which the sheet or web travels in proper alinement with the margins or unprinted portions of the sheet or web, so that the printed portions will be raised and kept away from the body of the cylinder or other support and offset thus prevented.- When the sheet or web has equally spaced margins, or when the margins are always the same distance apart and do not vary, these margin bearers or bands may be made an integral part of the roll. Frinting machines are, however, designed for the production of products of greatly varying widths, and the position of theprinted matter on the prodnot with respect to the margins or unprinted portion likewise widely varies. It becomes desirable, therefore,that when the distance between the margins or other unprinted portion of the sheet or web varies from time to time, that means be provided for setting the margin bearers in corresponding positions and holding them in place, as required.

It is the object of the present invention to provide a margin bearer constructionof such character that it can be readily and quickly moved or adjusted to any position on the supporting surface with which it is used, as a cylinder, pipe roll or guide, and quickly put on the roll or other support when in the required position, firmly locked into place marked 1 in the drawings.

so that it will not be shiftedout of position because of high cylinder speed or for other reasons, the locking means being such that they may be operated at any position along the roll.

It is a further object of the invention to produce an improved margin bearer or band of simple and cheap design.

In the accompanying drawings Figure l is a front elevation, partly broken away, showing the improved margin bearer and a means for looking it in position;

Fig.2 is a partial cross-section taken on line 2-2 of Fig. 1;

Fig. 3 is a similar view taken on the line 3-3 of Fig. 1;

Fig. t is a plan, showing the margin bearers in spaced relation with the margins of a web a plurality of pages or sections wide, the1 web being shown partly broken away, anc I Figs. 5 and 6 are detail views of the preferred form of locking device, showing respectively the lock in locked and unlocked position.

l/Vhile the invention may be and is intended foruse with cylinders, turning rolls,

guides or other sheet or web supports of the press through which the sheet or web runs,

it is particularly adapted for use with pipe rolls, that is, hollow rolls having thin walls, which are extensively used throughout presses where possible because of their lightness and stiffness, and the invention has beenshown as applied to such roll, which is This roll 1 is supported in any suitable manner, as on shaft 2, which is journaled in the machine in any suitable manner. Placed about the roll are the improved margin bearers, marked 3, a suitable number of these bearers being provided so that preferably a bearer will be positioned under each margin of the sheet or web, and, where the sheet or web is more than one page or section wide, under all the margins of the pages, so as to keep all the printed part of the sheet or web raised out of contact with the rolls, as illustrated in Fig. 4.

The particular construction and material of the margin bearer may vary. It will, however, preferably be of such construction that it can readily and quickly be placed about the roll and moved along the roll to any position thereon which occasion shall require. It will, furthermore, be so made that it can be used with a grooved roll, having a shallow groove, that is, one not out entirely through the roll, thus avoiding a weakening of the roll. In the preferred construction, and as illustrated, this margin bearer is a thin narrow strip of suitable material, the ends of which are thicker than the body to provide what may be termed holders 4;, one of these holders being provided at each end of the bearer. In the preferred construction, the bearer is formed of thin flexiblermetal', and when this construction is employed the holders may be formed integral with the strip. If desired, however, they may be made separately therefrom, and secured thereto in. any suitable manner, and if the body of. the bearer be made of leather, or be in the form of atape, they will be thus preferably formed and secured. The holders are, as illustrated, in the form of lips depending from the band having their inner edges beveled as indicated at. 5. One of these lips taken under the beveled sides 6 of a groove 7 cut in the roll, and the other lip cooperates with a suitable locking de-- vice for locking the band on the roll, and

preventing shifting. Various devices may be employed for removably locking the bearers. in position on the roll. In the particular construction illustrated, however, there will be preferably employed keys 8 readily movable todifferent positions along the roll, which will cooperate with one of the holders 4 to tightly secure the band in its place, and in the preferred construction the? key will be so formed that it may be inserted at any point along the grooved rolli. To effect this, as shown, a key is provided with a stem 9 having a wedge surface and ahead 10, the shank 9 having beveled edges to cooperate with the undercut edges of the groove. WVhile various means may be employed to enable the key to be placed in any position along the groove, as shown in Figs. 5 and 6, the head will for convenience. in construction be formed with a rounded edge 15 which may be beveled to take under one of the undercut edges of the groove. The other opposite edge of the head is cut away diagonally of the shank as indicated at 16. With this construction, the key may be placed in the groove at any position, and is secured therein and released therefrom by rocking it on the rounded edge, as clearly shown. By driving this key it will be seen that on account of the wedge surface 9 cooperating with the holder 4:, the bearer,is forced into position and locked firmly in the groove. If desired a key such as shown in Fig. 2 may be employed. In this construction the opposite edges of the key are straight and beveled to cooperate with both undercut edges of the groove. When such form of key is used.

it may be inserted from the ends of the rolls, the rolls being grooved from end to end to eflect this, or, if desired, slots such as 12 may be provided in the grooved walls for permitting the keys to be inserted in the groove. In both forms the key will likewise preferably be provided with securing means such as set screw 11 taking against the bottom of the groove, by which the key is securely held.

lVith this construction it will be seen that. a simple and efiicient margin bearer has been produced which can be readily placed in position on the shaft or web support by springing it into the groove, quickly locked in place, and readily adjusted, as may its locking means, to any position along the support.

While the keys shown are convenient ones for the purpose intended, it will be understood that various forms of locking keys, such as spring keys, may be employed. It will be further understood that the bearers may be made of various materials, and that the specific construction and means of securing them in place in the rolls may be varied, without departing from the invention.

What is claimed is:

1. The combination with a roll, of a groove in the roll, a margin bearer substantially encircling the roll and provided with holders taking into the groove, the holders extending substantially across the grooves and forming a substantially continuous outer bearing surface, and locking means slidable along the roll into locking position and cooperating with a holder for locking the bearer in position on the roll.

2. The combination with a roll, .of a groove in the roll, a margin bearer substantially encircling the roll and having its ends in the groove, the ends of the bearer extending substantially across the groove and providing a substantially continuous outer bearing surface, and locking means slidable along the roll into locking position and cooperating with the bearer for looking it in any position along the roll.

3. The combination with a roll, of a groove in the roll having undercut edges, margin bearers substantially encircling the roll and provided with holders at each end, said holders extending substantially across the groove and forming a substantially continuous outer bearing surface, one of the holders taking under one edge of the groove, and locking means, one for each bearer, slidable in the groove into locking position and cooperating with the other holder and taking under the other edge of the groove for locking the bearers in position.

4:. The combination with a roll, of a groove in the roll, margin bearers substantially encircling the roll and provided with neaaveo depending holding lips taking into the groove, said holder lips extending substantially across the groove and forming a sub stantially continuous bearing surface, and locking keys, one for each bearer, slidable in the groove into locking position and cooperating with a lip for locking the bearers in the groove.

5. The combination with a roll, of a groove in the roll having undercut edges, margin bearers substantially, encircling the roll and provided with lips having beveled surfaces, said lips extending substantially across the groove and forming a substantially continuous bearing surface, one of the lips of each of the margin bearers taking under the edges of the grooves, and wedge locking keys, one for each bearer, each key being slidable in the groove into locking position and cooperating with the other lip of the bearer and having a beveled face taking under the other edge of the groove.

6. The combination with a roll, of a groove in the roll, margin bearers encircling the roll and taking into the groove, wedge locking keys, one for each bearer, cooperating with the bearers, and slidable along the roll into locking contact with the bearer, and means for securing the keys in the groove.

7. The combination with a roll, of a groove in the roll, a margin bearer having its ends in the groove and extending sub stantially across the groove and thus substantially encircling the roll and movable to any position thereon, and locking means insertible in the groove in any part thereof and slidable along the groove into locking position for locking the bearer in any posi tion along the roll.

8. The combination with a roll, of a groove in the roll, margin bearers encircling the roll and taking into the groove, and

locking keys in the grooves, one for each bearer, said locking keys being shaped so that they may be rocked in the groove to permit their insertion and removal at any point.

9. The combination with a roll, of a groove in the roll having undercut edges, margin bearers encircling the roll and taking into the groove, and locking keys in the grooves, one for each bearer, having wedge shaped shank and a head having a rounded edge and an opposite edge diagonal to the shank.

10. The combination with a roll, of a groove in the roll, margin bearers encircling the roll and taking into the groove, and locking keys, one for each bearer, slidable in the groove into locking relation with the bearers and shaped so that they may be rocked in the groove to permit insertion and removal at any point.

11. The combination with a roll, of a groove in the roll, margin bearers encircling the roll and taking into the groove, and lockingkeys, one for each' bearer, having a shank cooperating with the bearer to lock the bearer in the groove, and a head having a beveled edge one end of which is rounded and an opposite edge diagonal to the shank to permit the insertion and removal of the locking key at any point in the groove.

12. The combination with a roll, of a groove in the roll, a margin bearer having its ends in the groove substantially encir' cling the roll and movable to any position thereof and locking means insertible in the groove in any part thereof and arranged to be rocked in the groove to permit insertion or removal at any point.

13. A margin bearer, comprising a thin band or strip of metal of substantially the width of a margin or other unprinted portion of a sheet or web of substantially the circumference of the roll with which it is to be used said bearer being provided with holding lips at its ends having beveled faces adapted to take in an opening in the roll said lips extending substantially across the roll opening and forming a substantially continuous outer bearing surface and cooperating with suitable locking means.

In testimony whereof I have hereunto set my hand.

EDWARD P. SHELDON. 

